东昆仑西段开木棋河镍矿成矿地质背景及前景分析

Geological background and prospect analysis of the kaimuqihe nickel deposit in the West Part of East Kunlun

研究区地处东昆仑造山带西段昆中断裂带北侧的东昆中微陆块内,大地构造单元属秦祁昆造山系东昆仑弧盆系的祁漫塔格岩浆弧带和东昆仑北坡复合岩浆弧带结合部位,区内建造组成丰富,地质构造复杂,岩浆活动强烈。区域上华力西早期超镁铁质、镁铁质岩体尽管不甚发育,但成矿作用显著,具有形成与基性-超基性岩有关的铜镍硫化物矿床的成矿地质条件。

The study area is located in the Dongkun middle-microcontinent on the north side of the Kunzhong fault zone in the Western segment of the East Kunlun Orogenic Belt The tectonic unit is the joint of the qimantage Magmatic Arc Belt of the East Kunlun Arc Basin System and the composite magmatic arc belt of the North Slope of the East Kunlun Mountains. Although the early variscan ultramafic and mafic rocks are not well developed in the region, their mineralization is remarkable and they have the ore-forming geological conditions for cu-ni sulfide deposits related to basic-ultrabasic rocks.